. >> the treasury secretary, tim geithner cleaned up his signature. there is now a petition to keep ja jack's doodle. >> kind of like when your little kid draws hair on you. >> i can do better than that with this cast on. >> we're doing autographs of the these. >> mine impossible. you can't even -- >> that's pretty good. >> roker's is beautiful. >> come on! >> makes you want to be a weather person. >> here's me. >> nat callie, looks like you did that with a cast. >> i did. >> what does that say? >> corbin bernsen. >> the simple like french. [ elizabeth ] i like to drink orange juice or have lemon in my water... eat tomato sauce on my spaghetti. the acidic levels in some foods can cause acid erosion. the enamel starts to wear down. and you can't grow your enamel back. i was quite surprised, as only few as four exposures a day what that can do to you. it's quite a lesson learned. my dentist recommended that i use pronamel. because it helps to strengthen the enamel. he recommended that i use it every time i brush. you feel like there is something that yo